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采用流场模拟软件模拟了十一组分RAM-II飞行器表面等离子体鞘套的分布,提取了四个典型飞行高度、飞行状态下的等离子体鞘套的分布信息.然后根据RAM-II飞行器等离子体鞘套数据,利用计算色散介质的Z变换FDTD方法主要计算了电磁波在四个不同高度处等离子体鞘套中的功率反射系数和功率透射系数.此外,根据目前可以做出的磁场强度的大小,对四个不同高度下的非均匀等离子体鞘套层按距飞行器表面的距离进行相应的非均匀磁化.由于左旋极化波和右旋极化波在磁化等离子体中的传输特性不同,最后对比了左旋极化波、右旋极化波在非磁化和磁化情况下的传输特性,对飞行器导航通信磁窗天线的设计给出建议.
The flow field simulation software was used to simulate the distribution of plasma sheath on eleven components of RAM-II aircraft and the distribution of plasma sheath at four typical flight altitudes and flight states was extracted.According to RAM-II aircraft plasma Sheath data, the Z-transform FDTD method, which calculates the dispersion medium, mainly calculates the power reflection coefficient and power transmission coefficient of the electromagnetic sheath in the plasma sheath at four different heights. In addition, according to the magnitude of the magnetic field intensity that can be made at present, , The non-uniform plasma sheath at four different heights is correspondingly non-uniform magnetized by the distance from the surface of the aircraft.As the transmission characteristics of left-handed and right-handed polarized waves in magnetized plasma are different, the last The transmission characteristics of left-handed polarized wave and right-handed polarized wave under non-magnetization and magnetization are compared, and the design of the magnetic window antenna for navigation communication is given.